Envelop.



. closed; and

width of the tongues JAMES MOORE, OF STRATEORD, CONNECTICUT. i

ENVELOI?.

Specification of Letters Patent.

Patented Aug. 27, 1918 Application filed October 23, 1917. Seria1No. 198,090.

To all lwhom 'it may concern.'

Be it known that I, JAMES MOORE,` a citizen of the United States, and a resident of Stratford, in the county of Fairfield and State of Connecticut, have invented a new and Improved Envelop, of which the following is a full, clear, and exact description.

My invention relates to an envelop of the safetytype which is characterized by the provision of tongues extending from the covering` flap and for which slots are provided in the other flaps of the envelop, said tongues being provided with adhesive adapted to engage the side flaps of the `envelop and retain the same in position when the envelop is sealed. I

With the above and other objects in view, the nature of which will more fully appear as the description proceeds, the invention consists in the novel construction, combination and arrangement of parts as herein fully described, illustrated and claimed.

In the accompanying drawings, forming part of the application, similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan of the blank;

Fig. 2 is the blank partly folded in the envelop; j

Fig. 3 is the elevation of the envelop Fig. 4f is a 4-4, Fig. 3.

Referring to the drawings, the blank is cut in the manner customary for an ordinary envelop. It has a main section 5, bottom flap 6, side flaps '7,v and coverlng iiap 8. The covering flap has closingV or locking tongues 9 which are disposed at a distance from the apex so that their edges 10 nearer to the apex are adapted to coincide with the lower edges 11 of the side flaps 7. The 9 is substantiallyequal to the width of the overlap 12 formed by the bottom and side aps when the envelop is folded (see Fig. 3). The locking tongues 9 preferably taper toward their free end and are cut at such an angle` on the covering flap as to coincide with the Obliquity of the overlap formed by the bottom and side flaps.

The edges 11 of the side aps 7 have notches 13 with which slots 14 in the bottom ilapy 6 are adapted to coincide when the envelop is folded (see Figs. 2 and 3). These fragmentary section on line (topics of this patent may be obtained for flaps, a covering` slots and notches when in register are adapted to receive the corresponding locking tongues 9. These tongues will lock the flaps togethenwhen said tongues are folded inwardly against the inner surface of the side flaps 7 after the tongues have been passed through the slots and notches.

To preventv the side iiaps 7 from being pulled out sidewise, intentionally or votherwise, and to insure against accidental in- ]ury to the tongues 9, the edge of the covering tongue is provided with adhesive. In consequence if any unauthorized person tries to disengage the covering flap from its engagement with the rest of the envelop, it will be necessary to rupture the tongues 9 and, therefore, the tampering` with the envelop will be apparent.

I claim:

l. An envelop of the class described comprising a blank having a bottom flap, side flap, and locking tongues extending from the edges of the covering flap so as to follow'the Obliquity of the overlapping edges ofthe bottom and side flaps when said covering flap is folded over said bottom and side flaps, said side flaps having notches and said bottom flap having slots adapted to register with. said notches when said bottom flap is folded over said side iaps, said tongues being adapted to engage the registering notches and slots and lock Y y said bottom flap is folded over said side flaps, said tongues and edge of the covering flap being` gummed, said tongues being adapted to engage the registering notches and slots, the gum on said tongues vpreventing the unlocking of said side iaps by a side pull, the gummed portion of thel covering flap preventing accidental damage to said tongues when engaged by the notches and slots of the bottom and side iaps.

JAMES MOORE.

nve cent: each, by `addressing lthe Gommislioner of Istcntl.

Washington, D. 0."

follow the Obliquity of the over- Y edges of the bottom and side iaps f 

